I have installed the last joomla 4. I had to desactivate the nicepage plugin before . The setup was fine but when I activated the nicepage plugin here what I have :
0 Call to undefined method Joomla\CMS\Application\AdministratorApplication::isAdmin()
and the site is broken
I have installed the last joomla 4. I had to desactivate the nicepage plugin before . The setup was fine but when I activated the nicepage plugin here what I have : 0 Call to undefined method Joomla\CMS\Application\AdministratorApplication::isAdmin() and the site is broken